Malicious PDF — malware analysis report

Static analysis result for SHA-256 667583f0203e31aa…

MALICIOUS

PDF

115.7 KB Created: 2020-07-26 21:56:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: b94cc972b3ff6c67dea9aa2776be8e1d SHA-1: fadf4f5b54bd952bb6b5c71a588865224a3e9630 SHA-256: 667583f0203e31aa7f5796736057936edc1b99bbfe1db7761358fa1adaf440c7
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous links designed to appear as a link farm, with a primary lure of "Audio file from itunes". It redirects through a malicious infrastructure at `ttraff.cc`, which is flagged as a redirector. The ML classifier strongly indicates maliciousness, and the overall structure suggests a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://ttraff.cc/pify?keyword=audio+file+from+itunes In PDF document text
    • http://files.treeservicesanclemente.com/uploads/1/3/0/8/130814043/613bd7187bec.pdfIn PDF document text
    • http://files.karenjuneau.com/uploads/1/3/1/3/131398052/xunolirajekoz.pdfIn PDF document text
    • http://files.divinesoulenergy.com/uploads/1/3/0/9/130969819/d55ccdadbe3c.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2977/3982/files/pavikaful.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8259/6004/files/bedipopuwofarafoweba.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/1312/8867/files/31963407542.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7755/7660/files/naguxixeraseraveba.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/5552762143.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4704/2715/files/xuturebosa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/5863/2606/files/didipopoxid.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/6164/7262/files/9223113130.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3667/2162/files/bajilesavovusumota.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/9350/5688/files/getowowobagi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5409/4743/files/12540106528.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2758/6472/files/77918761962.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00018868.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x18868 4712 bytes
SHA-256: fd047471038112d8a721c78dfe031fe6f03d529994a7cb1e7d15d5b27cd1eac3
font_01_sfnt_off0001984d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1984D 12428 bytes
SHA-256: dc9f7dd91a1394088c9dbcb95af09c9dd0d995e3f9fa6c233e94a3506bc3b711

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